c3a871fde1
Currently, constants in posets, in addition to being stored in a DAG, are also stored as SSA values in a slice. This allows to quickly go through all stored constants, but it's not easy to search for a specific constant. Following CLs will benefit from being able to quickly find a constants by value in the poset, so change the constants structure to a map. Since we're at it, don't store it as *ssa.Value: poset always uses dense uint32 indices when referring a node, so just switch to it. Using a map also forces us to have a single node per constant value: this is a good thing in the first place, so this CL also make sure we never create two nodes for the same constant value. Change-Id: I099814578af35f935ebf14bc4767d607021f5f8b Reviewed-on: https://go-review.googlesource.com/c/go/+/196781 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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